function Auth_OpenID_include_init()
{
if (Auth_OpenID_getMathLib() === null) {
Auth_OpenID_setNoMathSupport();
}
}
/**
* {@link Auth_OpenID_getMathLib} checks for the presence of long
* number extension modules and returns an instance of
* {@link Auth_OpenID_MathWrapper} which exposes the module's
* functionality.
*
* Checks for the existence of an extension module described by the
* result of {@link Auth_OpenID_math_extensions()} and returns an
* instance of a wrapper for that extension module. If no extension
* module is found, an instance of {@link Auth_OpenID_MathWrapper} is
* returned, which wraps the native PHP integer implementation. The
* proper calling convention for this method is $lib =
* Auth_OpenID_getMathLib().
*
* This function checks for the existence of specific long number
* implementations in the following order: GMP followed by BCmath.
*
* @return Auth_OpenID_MathWrapper $instance An instance of
* {@link Auth_OpenID_MathWrapper} or one of its subclasses
*
* @package OpenID
*/
function Auth_OpenID_getMathLib()
{
// The instance of Auth_OpenID_MathWrapper that we choose to
// supply will be stored here, so that subseqent calls to this
// method will return a reference to the same object.
static $lib = null;
if (isset($lib)) {
return $lib;
}
if (Auth_OpenID_noMathSupport()) {
$null = null;
return $null;
}
// If this method has not been called before, look at
// Auth_OpenID_math_extensions and try to find an extension that
// works.
$ext = Auth_OpenID_detectMathLibrary(Auth_OpenID_math_extensions());
if ($ext === false) {
$tried = array();
foreach (Auth_OpenID_math_extensions() as $extinfo) {
$tried[] = $extinfo['extension'];
}
$triedstr = implode(", ", $tried);
Auth_OpenID_setNoMathSupport();
$result = null;
return $result;
}
// Instantiate a new wrapper
$class = $ext['class'];
$lib = new $class();
return $lib;
}
* Status code returned when there were no OpenID arguments
* passed. This code indicates that the caller should return a 200 OK
* response and display an HTML page that says that this is an OpenID
* server endpoint.
*
* @see Auth_OpenID_Server
*/
define('Auth_OpenID_DO_ABOUT', 'do_about');
/**
* Defines for regexes and format checking.
*/
define('Auth_OpenID_letters', "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ");
define('Auth_OpenID_digits', "0123456789");
define('Auth_OpenID_punct', "!\"#\$%&'()*+,-./:;<=>?@[\\]^_`{|}~");
if (Auth_OpenID_getMathLib() === null) {
Auth_OpenID_setNoMathSupport();
}
/**
* The OpenID utility function class.
*
* @package OpenID
* @access private
*/
class Auth_OpenID
{
/**
* Return true if $thing is an Auth_OpenID_FailureResponse object;
* false if not.
*
* @access private
*/
